Implement Region.undo

Implement Region.redo
Implement Region undoSession implement

BauSystem_Main/src/de/steamwar/bausystem/region/Region.java

@@ -172,13 +172,6 @@ public class Region {
         }
     }
 
-    private void initSessions() {
-        if (undoSessions == null) {
-            undoSessions = new SizedStack<>(20);
-            redoSessions = new SizedStack<>(20);
-        }
-    }
-
     public boolean inRegion(Location location, RegionType regionType, RegionExtensionType regionExtensionType) {
         if (!hasType(regionType)) {
             return false;
@@ -361,40 +354,44 @@ public class Region {
 
         PasteOptions pasteOptions = new PasteOptions((schematic != null && (schematic.getSchemType().fightType() || schematic.getSchemType().check())), ignoreAir, getPlain(Flag.COLOR, ColorMode.class).getColor(), regionExtensionType == RegionExtensionType.EXTENSION, getMinPoint(regionType, regionExtensionType), getMaxPoint(regionType, regionExtensionType), waterLevel);
 
+        EditSession editSession = null;
         switch (regionType) {
             case BUILD:
                 System.out.println(schematic + " " + prototype.getBuild().getSchematicFile() + " " + regionType + " " + regionExtensionType + " " + minPointBuild);
                 if (schematic != null) {
-                    paste(schematic.load(), minPointBuild, pasteOptions);
+                    editSession = paste(schematic.load(), minPointBuild, pasteOptions);
                 } else {
-                    paste(prototype.getBuild().getSchematicFile(), minPointBuild, pasteOptions);
+                    editSession = paste(prototype.getBuild().getSchematicFile(), minPointBuild, pasteOptions);
                 }
                 break;
             case TESTBLOCK:
                 System.out.println(schematic + " " + prototype.getBuild().getSchematicFile() + " " + regionType + " " + regionExtensionType + " " + minPointTestblock);
                 if (schematic != null) {
-                    paste(schematic.load(), minPointTestblock, pasteOptions);
+                    editSession = paste(schematic.load(), minPointTestblock, pasteOptions);
                 } else {
-                    paste(prototype.getTestblock().getSchematicFile(), minPointTestblock, pasteOptions);
+                    editSession = paste(prototype.getTestblock().getSchematicFile(), minPointTestblock, pasteOptions);
                 }
                 break;
             default:
             case NORMAL:
                 System.out.println(schematic + " " + prototype.getBuild().getSchematicFile() + " " + regionType + " " + regionExtensionType + " " + minPoint);
                 if (schematic != null) {
-                    paste(schematic.load(), minPoint, pasteOptions);
+                    editSession = paste(schematic.load(), minPoint, pasteOptions);
                 } else {
-                    paste(prototype.getSchematicFile(), minPoint, pasteOptions);
+                    editSession = paste(prototype.getSchematicFile(), minPoint, pasteOptions);
                 }
                 break;
         }
+
+        initSessions();
+        undoSessions.push(editSession);
     }
 
-    private static EditSession paste(File file, Point pastePoint, PasteOptions pasteOptions) {
+    private EditSession paste(File file, Point pastePoint, PasteOptions pasteOptions) {
         return VersionedCallable.call(new VersionedCallable<>(() -> Region_15.paste(file, pastePoint, pasteOptions), 15));
     }
 
-    private static EditSession paste(Clipboard clipboard, Point pastePoint, PasteOptions pasteOptions) {
+    private EditSession paste(Clipboard clipboard, Point pastePoint, PasteOptions pasteOptions) {
         return VersionedCallable.call(new VersionedCallable<>(() -> Region_15.paste(clipboard, pastePoint, pasteOptions), 15));
     }
 
@@ -402,4 +399,47 @@ public class Region {
         return this == GlobalRegion.getInstance();
     }
 
+    private void initSessions() {
+        if (undoSessions == null) {
+            undoSessions = new SizedStack<>(20);
+            redoSessions = new SizedStack<>(20);
+        }
+    }
+
+    public boolean undo() {
+        initSessions();
+        EditSession session = null;
+        try {
+            session = undoSessions.pop();
+            if (session == null) {
+                return false;
+            }
+            session.undo(session);
+            redoSessions.push(session);
+            return true;
+        } finally {
+            if (session != null) {
+                session.flushSession();
+            }
+        }
+    }
+
+    public boolean redo() {
+        initSessions();
+        EditSession session = null;
+        try {
+            session = redoSessions.pop();
+            if (session == null) {
+                return false;
+            }
+            session.redo(session);
+            undoSessions.push(session);
+            return true;
+        } finally {
+            if (session != null) {
+                session.flushSession();
+            }
+        }
+    }
+
 }